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Posted to notifications@accumulo.apache.org by "Josh Elser (JIRA)" <ji...@apache.org> on 2015/02/13 19:06:14 UTC

[jira] [Created] (ACCUMULO-3590) Rolling upgrade support

Josh Elser created ACCUMULO-3590:
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             Summary: Rolling upgrade support
                 Key: ACCUMULO-3590
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3590
             Project: Accumulo
          Issue Type: Improvement
            Reporter: Josh Elser
             Fix For: 1.7.0


We really lack any support for rolling upgrades between versions of Accumulo.

Need to have a way to provide seamless upgrades between certain versions of Accumulo which minimize any downtime/impact on users of the system.

Need to cover fundamental control features (like a rolling upgrade), changes to our serialized data structures (help prevent us from goofing up serialization across versions -- thrift/protobuf/etc), backwards/forward compatible RFile and WAL support (including control), lots of tests, and lots of documentation.



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